Segregation and Social Stratification are two different things. The first is artificial and man made, a construct meant for the subjugation of one class of people over another. Social Stratification is a natural and voluntary separation according to race, social and economic status. Social stratification is what you see in place most visibly in high schools, where Asian, Black, Hispanic and others choose to group and sit with each other. It is the difference between the makeup of clientele at a Soul Food restaurant and an Italian restaurant. It is the difference between the golf course and the basketball court.